golf ball $=0\mathrm{.}0459kg$

position $1=2$m

Velocity from $1$ to $2=6\mathrm{.}27$m$/$s

Bounce $1(3$ to $5)=0\mathrm{.}101$s

Bounce$2(6-8)=0\mathrm{.}673$s

What is the Velocity of postion $3$

The height of postion $4$

Please show work so i can understand the concepts as I keep getting inaccurate results of position $7$ being higher then postion $4.$